Sell it on ebay, you would be suprised how much used cameras go for, even when you advertise it is having problems. On a side note, I am hearing good things about the Nikon D200 - also not to fond of the 20D except in bright, natural light. Pain in the ass in low light.
If you want the trusty D70s, I just picked up a second one on bestbuy.com for 899 - the whole outfit.
